Servomotors

The range of servomotor and motorised bearings has been designed with the aim of reducing mass and overall dimensionsas well as achieving high rigidity of the shaft. Servomotors have very high angular precision and can evolve in demanding mechanical and vibratory environments.  

The servomotor and the motorised bearingsbring the following benefits:

• A hollow shaft for central routing of equipment and connections;
• A high precision angular position sensor which is integrated into the servomotor range;
• Motorised bearings architecture and flat, compact, so-called pancake-shaped servomotor; 
• High axis velocity thanks to its direct drive architecture and low inertia; 
• High torque and high reliability are delivered by the Brushless motor.

Motorised Bearings

The carbon composite positioner has been developed for the new defence and aeronautics telecommunications markets that demand high positioning accuracy and stable mechanical behaviour in time. This positioner brings the following benefits:

• A significant reduction of mass by the use of carbon composite parts certified for aeronautical use;
• A positioning on 3 axes which allows high mobility of the antenna and continuous scanning of the pointing zone;
• A reduced and compact overall dimensions by the integration of small section ball bearings close to the axis;
• A reduction of pointing defects through precise axis production;
• Maintenance and precise positioning of a 5 kg payload. On request, ADR may adapt the architecture according to the mass.

With its experience in high precision ball bearing technology, ADR has been able to develop unique skills in its integration.
There are currently three different types of integrated ball bearings manufactured by ADR:

• ADR X-Space ball bearings
• Specific ball bearings
• Sealed integrated bearings

The aim of this integration is to improve the capacity and behaviour of the rotating system by providing:

• Increased rotation and guidance precision, repeatability (preloading and friction torque) and stiffness, depending on the chosen design;
• Reduced dispersion and rejects.

Users can thereby optimise their production chain by avoiding any superfluous adjustment, setting and assembly time thanks to:

• A reduction in the number of components, overall dimensions and mass;
• Solid, adjusted and applied preloading;
• Increased capacity and stiffness;
• Reliable integration into the system and easy mounting.

This specific design uses materials and fluid lubricants or qualified solids and ensures the performance and repeatability of the behaviour of these bearings.

As assembly and final checks are performed in clean rooms, they provide a level of cleanliness and compatibility for some sectors where specific characteristics and technical mastery are mandatory, such as aerospace, defence & security, energy, medical or industry.

With dimensions ranging from a 1 mm bore diameter to a 450 mm external diameter, ADR high precision ball bearings allow you to meet the most stringent technical standards while maintaining an exceptional level of performance.

Each product is developed to order and scrupulously respects the specifications of its customers in order to offer them the best solutions.

ADR and its ball bearings excel in many areas, thanks to their specific characteristics and their technical mastery.

• High speed and accurate rotation combined with an extremely low vibratory level.
• Low friction torque and long-life span.
• Control of the complete production process and preloading of the pairs of bearings.
• Limitation of geometric faults and alignments as well as an increase in angular stiffness and a reduction of the overall dimensions through a “super duplex” version.
• Use of specific materials adapted to each application: materials, specific or conventional steel, treatment, lubrication, balls, etc.